We have to work out the relative percentage of each group at a university e.g. Engineering 10%, Social Sciences 15%, English 20%, Sciences 25%, Languages 10%, Law 5%, Medicine 15% The sample must then contain all these groups in the same proportion as in the target population (university students).
Everything you need for your Tie-Dye project: Dyes, color enrichments, fixers, clothing blanks, and more! Tie-dye describes a pattern of color made by preventing the dye from reaching some areas of the fabric by using tight ties of rubber bands, sinew, string, etc., while dyeing others.
Making the ink. 1  1 The ink mixture is concocted. Preferable ratios are 1-10 % water by weight (the water content must be sufficient for complete dissolution or dispersion of the dye), with the remainder of the weight being made up of a solvent such as alkyl or alkylene carbonate.